Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2f87fe9b4b399ed…

MALICIOUS

PDF

47.5 KB Authoring application: Poppler-utils
MD5: da04db465985b8af66f6f93345e01825 SHA-1: a937dfef3c607ac1f213646e456a139ba8e63fd9 SHA-256: d2f87fe9b4b399edbb37d395a3ce7468fe403432c00e8d27d11fc39fdc9cab73
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs pointing to other PDF files, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. The embedded URLs are the primary IOCs, suggesting a campaign that relies on hosting malicious content on numerous compromised or controlled domains.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://mercyscleaningservices.com/uploads/1/3/0/6/130603904/gumefoni-nopilapo-rifelosoxizuk-kivaguzizaga.pdf
    • http://newplumtreeheights.com/uploads/1/3/0/6/130604039/sonolabasafugu-vobaz-rajarofisep.pdf
    • http://chaletalpemassif.com/uploads/1/3/0/4/130477309/8995431.pdf
    • http://reneesgourmetpizzeria.net/uploads/1/3/0/5/130588688/munige.pdf
    • http://saharaexchange.com/uploads/1/3/0/2/130273740/fiwumizi.pdf
    • http://alohawraps.co/uploads/1/3/0/5/130551880/3557781.pdf
    • http://natashamoustasha.com/uploads/1/3/0/2/130273733/nifimiziruz_lejip.pdf
    • http://phhlca.org/uploads/1/3/0/4/130489361/fiwaporijalu-risizozusasenam.pdf
    • http://dennisandkaterina.com/uploads/1/3/0/3/130379147/4558705.pdf
    • http://bearsversusbabiesgame.net/uploads/1/3/0/4/130435891/nefekanubamupo_pevemovus_jorew_watufogure.pdf
    • http://tidalwavesswim.com/uploads/1/3/0/6/130604361/2903fa25ea.pdf
    • http://bodyworkbybarb.com/uploads/1/3/0/7/130775364/130775364.html#fall+foliage+report+bear+mountain+ny

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000132d.bin
2dd85d46da8a70fc2766346b54acaf708ca7c5a01a3f9c8f3f6864b74ff5bc58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x132D 8512 bytes
font_01_sfnt_off00007307.bin
f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7307 16204 bytes

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